I appreciate that YMMV in Soho as elsewhere but I have to say that my experience with Mariana was not good at all. I've visited 14 women in Soho walkups in perhaps 40 or so encounters this calendar year and my visit to Mariana was the worst of these. She was not unpleasant but was very much a clockwatcher, rather cold, and clearly keen to get me out as quickly as possible so that she might see her next client for whom she was already preparing herself before I'd had a chance to even wipe up. I'd heard that she was rather special and was keen to see her but I've had better experiences, much better experiences in many cases, this year with all of the following:
Sabrina, Lily, Roxy, Kate, Amy, Lulu, Sophie (Thai), Bianca (Greens Court), Renata (Greens Court), Angie, Lavinia, Lucy and Zara (52 Greek Street). (Parenthesis to clarify when there are other girls of the same name working in Soho.)